1996 chrysler: relaced..torque converter..whine..first start

Customer Question

1996 chrysler t&c . relaced the torque converter and front pump for horrible whine. now when first start from stop everythi,g is fine. when slowing down below 60 kil. per hr. the trans goes into 2 gear and will not upshift again until the ignition is turned off and on. then operaTES NORMAL UNTIL SLOWED BELOW 60 K then turn off and on again and away we go. one mechanic told me it was a stuck valve in the valve body but because it seems to be speed related could it be the speedo sensor

DIAGNOSIS:Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRB III) with the appropriate Diagnostic Procedure Manual, verify all engine/transmission systems are functioning as designed. Test drive the vehicle throughout the transaxle operating temperature range. With the DRB III in the RPM Display Mode under Transmission Systems, monitor the Input (Turbine) Speed Sensor Signal. If the Input (Turbine) Speed Sensor Signal drops to 0 RPM and is accompanied by any of the following Diagnostic Trouble Codes (DTC's) 36, 50, 51, 52, 53, 54, 55, or 56 perform the Repair Procedure of this bulletin.

Connect the input (turbine) speed sensor wiring connector, be sure the weather seal is in place.

5.

Using the DRB III erase any DTC's in the Transmission Control Module (TCM).

NOTE : ON 1996 NS VEHICLES, A DTC 45 (CHECK TRANSMISSION SYSTEM) MAY BE STORED IN THE POWERTRAIN CONTROL MODULE (PCM) AND MAY HAVE ILLUMINATED THE "CHECK ENGINE LIGHT" (MIL). ALSO ON 1996 NS VEHICLES, THE DTC'S IN THE TCM MUST BE ERASED FOLLOWED BY THE DTC'S IN THE PCM TO TURN OFF THE "CHECK ENGINE LIGHT" (MIL).

it looks like i have a diferent tranmission. the servi ce letter about the speed sensor could not apply to me because i got the(NNN) NNN-NNNNsensor and it fell in the hole. the body was smaller than the 879 that was in it. i relaced it with a new 400879 but the problem still exists. this is a1996 chrysler town and country .

the scan tool said it was either a stuck valve or the speed sensor from the code. the speed sensor did not cure the problem.all the info i recieved before was useless, it was about the 3 speed. i hav e a 4 speed. i was told the valve body and the shift shaft come out together, the nut and lever must be removed from the top to let it drop out the bottom.now i hear a click and sqeel about20 mph when starting from a stop.but the trans shifts normaly after that until i slow to 20mph then abump shift into 2 and it wont shift again without turning the ignition off and on again

the click that you here has to be the transmission side mount its probably loose and needs to be tight,or the front mount if is a 4 speed and you feel a bump coming to a stop and then it limps is because a speed sensor is loosing signal have you scan the computer to see wish one is the one is it input or output speed sensor?

i did not know there was a input and out put. the info i got was sensor on the left front. iordered an 878 but it would not fit. so i returned it. as it was smaller than the one i had info on. i did rerplace one #879 it did nothing to help.i'm sure the mounts are tight as i had the trans out to replace the converter and front pump

NOTE : THIS BULLETIN APPLIES TO VEHICLES BUILT BETWEEN DEC. 1, 1994 (MDH 1201 XX) AND APR. 30, 1995 (MDH 0430XX) AND EQUIPPED WITH A 41TE OR 42LE TRANSAXLE WITH A DATE CODE BETWEEN 2183 AND 2295 (REFER TO ILLUSTRATION).

DIAGNOSIS:Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRB III) with the appropriate Diagnostic Procedure Manual, verify all engine/transmission systems are functioning as designed. Test drive the vehicle throughout the transaxle operating temperature range. With the DRB III in the RPM Display Mode under Transmission Systems, monitor the Input (Turbine) Speed Sensor Signal. If the Input (Turbine) Speed Sensor Signal drops to 0 RPM and is accompanied by any of the following Diagnostic Trouble Codes (DTC's) 36, 50, 51, 52, 53, 54, 55, or 56 perform the Repair Procedure of this bulletin.

Connect the input (turbine) speed sensor wiring connector, be sure the weather seal is in place.

5.

Using the DRB III erase any DTC's in the Transmission Control Module (TCM).

NOTE : ON 1996 NS VEHICLES, A DTC 45 (CHECK TRANSMISSION SYSTEM) MAY BE STORED IN THE POWERTRAIN CONTROL MODULE (PCM) AND MAY HAVE ILLUMINATED THE "CHECK ENGINE LIGHT" (MIL). ALSO ON 1996 NS VEHICLES, THE DTC'S IN THE TCM MUST BE ERASED FOLLOWED BY THE DTC'S IN THE PCM TO TURN OFF THE "CHECK ENGINE LIGHT" (MIL).

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I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP.TOM WHITTAKERUSA

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